You all have given me some good ideas and I thank you. I am going to WalMart tomorrow and will seek a few snakes. Actually, it is more than just one window. We have a triple window in the living room, the panes are large and a smaller one in my sewing room. The latter is the one most often visited now, although during mating season he visited all of them.
I'll try the snakes and will talk to the local pet shop for their ideas. -- Interesting that not one of you suggested "murder" which I have felt as I clean up the mess several times a week. It is really hard getting the mess off the brick.
Roberta, I am so sorry for the death of your beloved friend and nephew. My husband died last year. Do you think John has sent this robin? I'll speak to this robin and tell him enough and see if this helps. Blessings.